CN101876813A - Method, controller and sensor by the sensor on the controller identification bus - Google Patents
Method, controller and sensor by the sensor on the controller identification bus Download PDFInfo
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- CN101876813A CN101876813A CN2010101714621A CN201010171462A CN101876813A CN 101876813 A CN101876813 A CN 101876813A CN 2010101714621 A CN2010101714621 A CN 2010101714621A CN 201010171462 A CN201010171462 A CN 201010171462A CN 101876813 A CN101876813 A CN 101876813A
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- 238000012163 sequencing technique Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 description 8
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- 238000013461 design Methods 0.000 description 3
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- 238000005259 measurement Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
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Abstract
The present invention relates to method, controller and sensor by the sensor on the controller identification bus.At this, as the basis that function is controlled, sensor sends to controller with the physics valid data.In addition, mutual more described physics valid data and/or described physics valid data are compared with the desired value of being scheduled to, and discern described sensor according to this comparison and based on the distinctive difference for sensor of described physics valid data by controller.
Description
Technical field
The present invention relates to a kind of being used for comes the method for the sensor on the identification bus, a kind of controller and a kind of sensor by controller.
Background technology
So far, the bus system that is used to connect sensor in automobile is still quite rare.But because this type systematic provides numerous advantages, thereby will use this type systematic future progressively.In order in this type systematic, to use sensor, must discern this sensor clearly, otherwise which sensor which signal controller can not distinguish from.In principle, the order on the definition bus topology be possible (first sensor in the bus, second sensor ...), but this type of daisy chain (Daisy Chain) configuration can cause just the wiring of the costliness that should avoid by bus system.Therefore, favourable Star topology is infeasible.On bus, exist in the situation of the identical or sensor that type is identical of a plurality of structures, must use in logic the solution of expensive (Poka Yoke) or the solution of technical costliness (wiring), so that realize clear and definite identification.
The identical acceleration transducer of structure of discerning use diverse location place on same bus by corresponding signal is disclosed in prior art DE 10023355A1, these acceleration transducers send to controller with this signal, wherein realize this signal in the following way: produce mechanical vibration for the addressing purpose near the identical acceleration transducer of each structure in the addressing stage.
Summary of the invention
A kind of being used for that the present invention relates to according to independent claims come the method for the sensor on the identification bus, a kind of controller and a kind of sensor by controller.By the present invention, feature that can sensor-based physics valid data is discerned the sensor that sensor, especially type are identical or structure is identical on the common bus, does not promptly need expensive logic to mark the position of each sensor in the preparatory stage.Need not produce signal specially to reach identification thus equally for the addressing purpose to sensor.The simple especially and therefore recognition methods with low cost of the sensor that is used on the bus is disclosed thus.
Feature by dependent claims obtains other advantages and improvement.
In a favourable design proposal, controller is compared the physics valid data and is relatively come identification sensor according to this with predetermined desired value.This design proposal has following advantage: controller has with satisfying the criteria and according to the device of use of the present invention (for example can be applicable to equally, storer or to the access of storer) so that preserve desired value, and also have carry out the physics valid data each other and/or with the device (for example, computing unit) of the comparison of desired value.Do not need or only need less additional expending thus in this design proposal, to realize the present invention with existing parts.
Another favourable embodiment is, each sensor is compared the physics valid data with predetermined desired value, relatively the physics valid data are sent to controller based on this, and controller comes identification sensor according to this distinctive time sequencing by distinctive time sequencing.Advantageously reach thus and will avoid possible blockage problem or collision problem according to of the present invention relatively transferring in the sensor and by the time sequencing of sensor messages.This embodiment can be for example sensor have for the application target of being planned with satisfying the criteria can be under not having the situation of additional equipment or at least with less additional be particularly advantageous when expending the device of realizing the method according to this invention.
What can suit in addition is, is determining constantly mutually the value of the physics valid data of sensor relatively and/or will be worth the time distribution of value of comparing with predetermined desired value or using the physics valid data for relatively or the execution comparison of being made up by their according to process.Not only can come identification sensor according to the eigenwert of physics valid data by this mode, but also can discern these sensors, can realize method especially flexibly thus according to characteristic curve.
Advantageously, the physics valid data being compared timing really carves and can predesignate by the state of in check function.Can store on the one hand thus about determining the distinctive desired value (just in time being definite state of in check function) of situation, this has realized clear and definite especially identification.Can be by this type of mode according to by the function of controller control or come the comparison physical data by the function of controller or sensor record at least.Can advantageously determine constantly (for example, when device starts) triggering identification, on the other hand so that (for example, from starting) provides identification clearly subsequently.
In another advantageous embodiments, lose to determine described definite moment not by in check function but by identifying information.Thus can be (for example owing to EMV influence cause) even begin new identification immediately and in this type of situation, also guarantee trouble-free operation thus when identification is lost.
The present invention who is introduced exists a plurality of types identical (for example, only temperature sensor or only pressure transducer) or a plurality of structure identical (for example, identical temperature sensor or identical pressure transducer) the situation of sensor in be particularly advantageous be expensive especially and save and cost savings for this type of situation provides maximum expending by the present invention thus because for these situations, in the preparatory stage position of each sensor on bus discerned or identified according to prior art.
Description of drawings
Shown in the drawings and in explanation subsequently, further specify embodiments of the invention.These accompanying drawings only are exemplary and do not limit general inventive concept.At this, in the accompanying drawings, the Reference numeral with two identical end numerals is represented identical or similar elements.
Accompanying drawing illustrates:
Fig. 1 shows the embodiment according to the pressure transducer at draft tube place in the automobile,
Fig. 2 shows the embodiment according to the temperature sensor at exhaust line place in the automobile.
Embodiment
Fig. 1 shows the embodiment of the method according to this invention according to the pressure transducer at the draft tube place of the internal combustion engine with turbosupercharger.Use two pressure transducers 101 and 102 that structure is identical at this, they are connected with controller 120 by star bus 110.Pressure transducer 101 and 102 is used on the draft tube 130, and wherein pressure transducer 101 is positioned at before the air throttle 131 of draft tube 130, and pressure transducer 102 is between air throttle 131 and internal combustion engine 140.Therefore, pressure transducer 101 is measured the pressure (admission pressure) before the air throttle 131, and the pressure (suction press) that pressure transducer 102 is measured between air throttle 131 and the internal combustion engine 140.The pressure data of these measurements conveys to controller 120 by pressure transducer 101 and 102 by bus 110, and its middle controller 120 is controlled all functions by these physics valid data, for example participates in the engine control of internal combustion engine 140.
Since in this embodiment pressure transducer 101 with 102 both be the addressing problem of structure identical and all be connected with controller 120, thereby can occur pressure transducer 101 and 102 or the problem of discerning pressure transducer 101 and 102 by controller 120 by bus line 110.Propose now for this reason, realize identification according to physics valid data (herein according to pressure data) the sensor on the bus 110 101 and 102 by controller 120.For this reason, controller 120 will from pressure transducer 101 and 102 receive by controller 120 in order to control needed valid data (herein for pressure data) and to compare and relatively discerning the position of pressure transducer 101 and 102 on draft tube 130 according to this with the desired value of being scheduled to.
During with air throttle 131 cranking internal combustion engines 140 of usually closing to a great extent, for example can come identification sensor 101 and 102 according to the feature of the pressure data of admission pressure and suction press.Pressure in the draft tube 130 between air throttle 131 and the internal combustion engine 140 acutely descends, and the pressure before the air throttle 131 almost keeps constant.Therefore, normally structure is identical with 102 both and they although only come distinguishing sensor 101 by different sequence numbers where necessary, and it is possible that each sensor signal is distributed.
In this example, as the desired value that is used for comparing with physics valid data (force value), the time of the desired pressure in position of storage " before the air throttle 131 " and " between air throttle 131 and the internal combustion engine 140 " or desired pressure distributes in controller 120.By especially received force value being compared with these desired values predesignating by in check function (herein for engine control) regularly to carve really, pressure transducer 101 can be distributed to position " before the air throttle 131 " and pressure transducer 102 distributed to position " between air throttle 131 and the internal combustion engine 140 " and discern accordingly or address by controller 120.
Having illustrated among Fig. 2 as another embodiment temperature sensor is used on the exhaust line of automobile, is particularly advantageous according to identification of the present invention in this embodiment.At this, represent two temperature sensors that structure is identical with 201 and 202, they are used on the exhaust line 270 to carry out temperature survey and to be connected with controller 220 by bus 210.By bus 210 temperature information is transferred to controller 220 by sensor 201 and 202, the function in these controller 220 Control of Automobile for example participates in engine control.By to the sensor in the exhaust line 270 201 and 202 these type of controls of being carried out, having saved cable length, plug number and structure space with bus 210 (for example, the PSI5 of number bus system).In the present embodiment, for example use ASIC in the plug of temperature sensor, this ASIC converts the resistance signal or the voltage signal of the simulation of temperature sensor to digital signal usually.For this reason, two leads that comprise the energy supply that is used for ASCI and be used for coming transmission signals to the signal conductor of controller by current-modulation.
As at Fig. 1 described in the situation of pressure transducer 101 and 102, in the example in Fig. 2 also advantageously, be temperature sensor on the exhaust line 270 201 and the identical sensor of 202 both utilization structures, expend (mainly being that logic expends) so that save.Yet, must can distribute clearly by bus 220 equally along the different temperatures sensor 201 and 202 of exhaust line 270.Can be to the addressing of temperature sensor 201 and 202 by the likelihood of temperature signal, especially, we can say to a certain extent as a class from arbitration (Selbstarbitrierung) by relatively the realizing of temperature signal and desired value.
When engine cold starting, for example according to reaching the installation site that definite temperature threshold that depends on application is discerned exhaust line 270.When surpassing temperature threshold, ASIC just activates corresponding sensor 201 or 202, and carries out the address adjustment with controller 220.For the hot start that has indefinite Temperature Distribution along exhaust line (for example, the hot start after the diesel particulate filter (DPF) regeneration that is carried out before), for example temporal temperature change process is used as second criterion.For this reason, for example surmounting of relative temperature threshold value (initial temperature of this relative temperature threshold value during with engine start is relevant) is used for address assignment: when not relying on hot start along the Temperature Distribution of the exhaust line 270 of the automobile that pauses, along the exhaust line 270 for example 20K that raises once more in order, promptly surpass threshold value (before the T_ engine start+20K) moment.Such in the cold start sight as described above, sensor 201 or 202 is reported after surpassing (variable according to starting condition) threshold value, and (identify first sensor for this sensor address assignment along exhaust line 270 usefulness positions 1, identify second sensor with position 2, the rest may be inferred).With compare for address assignment time necessary (several milliseconds the orders of magnitude) by controller 220, the relative inertness (time of temperature saltus step is in several seconds the order of magnitude) that becomes process by the temperature in the exhaust line 270 has been guaranteed address conflict can not occur when sensor assignment.
In the example shown in Fig. 2, bus 210 is PSI5 bus preferably as described.This PSI5 bus based on: in the message box that the synchronizing pulse that is sent by controller 220 (main frame) is initiated, each sensor 201,202 (slave) distributes its time slot in the message at controller 220 places that is used for that obtains oneself.Because this message encodes by current-modulation, thereby only controller 220 (main frame) just can receive the content of this message.Before arbitrating certainly, sensor 201,202 does not know to distribute to their time slot.Therefore, sensor 201 and 202 at first sends on additional time slot (for example, first time slot) from reaching the said temperature criterion, this additional time slot only be keep for arbitration and after this arbitration finishes, keep not being used.Controller 220 usefulness are replied this type of measurement data of arbitrating on the channel (perhaps arbitrating time slot) about controller to the channel allocation of the channel of sensor, and this controller to the channel of sensor is to realize by the mode that suppresses indivedual synchronizing pulses targetedly according to PSI5 standard (option that is used for two-way PSI5 flexible program).After EMV that the individual sensor 201 or 202 that for example only makes bus resets disturbed, controller 220 can lacking and arbitrate lacking of message on the channel and detect this situation and correspondingly respond with time slot allocation according to the message on the distributed time slot of determining.Exist relate to more than one under the sensor situation that EMV disturbs successful implementation as described in Figure 2 the precondition of the method according to this invention be for example after this type of EMV disturbs, also to exist or trigger distinctive temperature value or distinctive in time temperature change process.
Among the embodiment that in Fig. 2, schematically shows, in controller 220 and without the desired value of the temperature value of temperature sensor 201 and 202, compare or distribute and compare with time of the temperature value of temperature sensor 201 and 202, or rather, conclusive is the time sequencing that these temperature values arrive controller 220.This order depends on the time distribution that is recorded in the temperature value in sensor 201 and 202 or is recorded in the temperature value in sensor 201 and 202 equally.For example, change by threshold value that surpass to determine or by the value of determining and come to be the bus communication on the bus 210 at first activated sensors 201 and one of 202, second sensor in the activated sensors 201 and 202 subsequently.Now, controller 220 has been stored the desired value of the time sequencing of communicating by letter that arrives by sensor 201 and 202 and can sensor 201 and 202 have been addressed by the mode that the time sequencing of the sensing data that will arrive is compared with the time sequencing of expection.
Same realize identification herein herein to sensor 201 and 202 by the mode that physics valid data (being in order to control needed temperature data by controller 220) are compared with the desired value of being scheduled to.At this, the time that fiducial value can relate to value, the physical data of physical data distributes or relates to the two simultaneously.Different with embodiment at Fig. 1, in this example according to of the present invention more not by controller 220 but undertaken by sensor 201 and 202.Subsequently, controller 220 comes identification sensor 201 and 202 based on the time sequencing that obtains thus of the bus registration of sensor 201 and 202.
For for the moment of comparison of the present invention, having different possibilities.In description, for example for the situation of automobile, at first mention engine start (cold start or hot start) constantly at Fig. 2.But, in the time of can also in the situation of losing identifying information (EMV influence), carrying out necessary new identification or preferably carrying out sometime according to comparison of the present invention according to determined other of in check function.This especially occurs in can be under these expect the situation that definite distinctive value or value change constantly or under belonging to of distributing of sensing data or sensing data time, these desired values constantly were stored in the controller for situation relatively.Can be by this type of mode according to by the function of controller control or come the comparison physical data by the function of controller or sensor record at least.Alternatively, can also carry out the continuous comparison of physics valid data and desired value, so that for example verify the identification of being carried out enduringly.
The physics valid data of having described in these embodiments sensor compare with the desired value that for example is stored in controller or the sensor of being scheduled to.Additionally or alternatively, can also be advantageously, mutually relatively the physics valid data of different sensors so that reach identification thus.For example, according to the embodiment that is similar to Fig. 1: the physical data of the physical data of sensor 101 and sensor 102 can be compared and for the moment of this air throttle state, can determine which position of which sensor more clearly by this type of corresponding to draft tube in moment of certain air throttle state with pressure transducer, because for example be clear that by damper position, which locational which sensor will write down higher pressure.
Certainly, identification according to the present invention can also be used for two with upper sensor, and use it for more that the sensor of big figure is particularly advantageous.Also only exemplarily used the identical sensor of structure in these embodiments.But can also conceive method, the identical sensor of type only so that recognition structure is different, for example temperature sensor only.In addition, (for example, pressure transducer and temperature sensor) use changes and predesignates for comparison as long as these sensors have distinctive and differentiable value or value can also to conceive different sensors.
The usage example of the sensor that structure is identical on the bus is intake manifold pressure sensor and air inlet pressure sensor (Fig. 1), has a plurality of supports
With two intake manifold pressure sensors in the engine of the air guide device that separates (two air throttles differently being controlled), (has test function (waste gate at the turbosupercharger controller that has a plurality of supports and a plurality of turbosupercharger and separate to the different controls of turbosupercharger, variable turbine physical dimension VTG)) two air inlet pressure sensors in the engine, inhaled air temperature sensor and engine temperature sensing unit, pressure transducer in two temperature sensors (Fig. 2) on the exhaust line, two air throttle situations.
In these two examples (at the description of Fig. 1 with at the description of Fig. 2), the identification of sensor is based on the distinctive value of physics valid data or changes based on the distinctive value in time of physics valid data carry out.Compared with prior art, both needn't make the identical sensor of structure be provided with position description, also needn't generate signal or data for identification sensor specially by the logic of costliness.
Claims (11)
1. one kind is used for coming sensor (101 on the identification bus (110) by controller (120), 102) method, wherein at least one first sensor (101) and second sensor (102) send to described controller (120) by described bus (110) with the physics valid data, and wherein said physics valid data are analyzed so that function is controlled by described controller (120), it is characterized in that
-with the physics valid data of described first sensor (101) and described second sensor (102) mutually relatively and/or compare with predetermined desired value
And
-realize identification by described controller (120) according to described comparison and based on the distinctive difference for described first sensor (101) and described second sensor (102) of described physics valid data to described first sensor (101) and described second sensor (102).
2. method according to claim 1, it is characterized in that, described controller (120) with the physics valid data of described first sensor (101) and described second sensor (102) mutually relatively and/or compare with predetermined desired value, and described controller (120) is relatively discerned described first sensor (101) and described second sensor (102) according to described physics valid data and described predetermined desired value.
3. method according to claim 1, it is characterized in that, at least described first sensor (201) and described second sensor (202) are compared described physics valid data with predetermined desired value, relatively described physics valid data are sent to described controller (220) based on described, and described controller (220) is discerned described first sensor (101) and described second sensor (102) according to described distinctive time sequencing by distinctive time sequencing.
4. according to each described method in the aforementioned claim, it is characterized in that, determining constantly to carry out the comparison of the value of described physics valid data.
5. according to each described method in the claim 1 to 3, it is characterized in that the comparison that distributes in definite time of carrying out the value of described physics valid data constantly.
6. according to claim 4 or 5 described methods, it is characterized in that described definite moment is to determine by the state of in check function.
7. according to claim 4 or 5 described methods, it is characterized in that described definite moment is that losing by identifying information determined.
8. according to each described method in the aforementioned claim, it is characterized in that described first and second sensors (101,102,201,202) are the sensors that type is identical or structure is identical.
9. a controller (120), it is configured to receive the physics valid data and analyze described physics valid data so that function is controlled from least one first sensor (101) and second sensor (102) by bus (110), it is characterized in that, described controller (120) has device, and this device is discerned described first sensor (101) and described second sensor (102) according to the mutual comparison of the physics valid data of described first sensor (101) and described second sensor (102) and/or with the comparison of the desired value of being scheduled to and based on the distinctive difference for described first sensor (101) and described second sensor (102) of described physics valid data.
10. controller according to claim 9 (120), it is characterized in that described controller (120) has to the physics valid data of described first sensor (101) and described second sensor (102) mutually relatively and/or the device of comparing with predetermined desired value.
A 11. sensor (201), it is configured to by bus (210) the physics valid data be sent to controller (220), wherein said physics valid data are analyzed so that function is controlled by described controller (220), it is characterized in that described sensor (201) has device that described physics valid data are compared with predetermined desired value and can be at the device that described physics valid data is sent to described controller (220) by the described more determined moment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009002708.4 | 2009-04-29 | ||
| DE102009002708A DE102009002708A1 (en) | 2009-04-29 | 2009-04-29 | Method for identifying sensors on a bus by a control unit, and a control unit and a sensor for this purpose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101876813A true CN101876813A (en) | 2010-11-03 |
| CN101876813B CN101876813B (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010171462.1A Active CN101876813B (en) | 2009-04-29 | 2010-04-28 | By the method for the sensor on controller identification bus, controller and sensor |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20100286944A1 (en) |
| CN (1) | CN101876813B (en) |
| DE (1) | DE102009002708A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103196360A (en) * | 2012-01-10 | 2013-07-10 | 罗伯特·博世有限公司 | Sensor device |
| CN104272761A (en) * | 2012-05-03 | 2015-01-07 | 大陆汽车有限公司 | Method for checking the operation of a psi5 reception unit in a motor vehicle controller, and corresponding psi5 reception unit |
| CN107590768A (en) * | 2016-07-06 | 2018-01-16 | 罗伯特·博世有限公司 | Method for being handled the position for means of transport and/or the sensing data in direction |
| CN111007113A (en) * | 2019-11-22 | 2020-04-14 | 湖南城市学院 | Optimized design method for metal oxide semiconductor gas sensor structure |
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| EP2839993A4 (en) * | 2012-04-16 | 2016-04-06 | Yamaha Motor Co Ltd | Vehicle sound generation apparatus, and vehicle sound generation method |
| DE102012103907A1 (en) * | 2012-05-04 | 2013-11-07 | Continental Automotive Gmbh | Method for operating a receiving unit of a motor vehicle control unit connected to at least one transmitting unit |
| DE102014215580B4 (en) * | 2014-08-06 | 2019-10-02 | Continental Automotive Gmbh | Method and system for programming a sensor network |
| CN105443213B (en) * | 2015-08-03 | 2017-11-03 | 吉林大学 | A kind of oxidation catalyzer hardware-in-loop simulation system based on analog circuit |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20100286944A1 (en) | 2010-11-11 |
| DE102009002708A1 (en) | 2010-11-04 |
| CN101876813B (en) | 2016-03-09 |
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